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Patent Analysis for Recycling of Spent Lithium Iron Phosphate Batteries by Leaching Process
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Xiujiao HUANG1, 2, Qunying TAN1, 2, Qunxuan YAN1, 2, Biyun LUO1, 2, 3, Hua SU1, 2, Yanhong YAN1, 2, Dan SUN1, 2
Mining and Metallurgical Engineering | 2025, 45(2) : 135 - 140
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Mining and Metallurgical Engineering | 2025, 45(2): 135-140
• METALLURGY •
Patent Analysis for Recycling of Spent Lithium Iron Phosphate Batteries by Leaching Process
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Xiujiao HUANG1, 2, Qunying TAN1, 2, Qunxuan YAN1, 2, Biyun LUO1, 2, 3, Hua SU1, 2, Yanhong YAN1, 2, Dan SUN1, 2
Affiliations
  • 1.Hunan Keyking Recycling Technology Co., Ltd., Hengyang 421800, Hunan, China
  • 2.Changsha Keyking Recycling Technology Co., Ltd., Changsha 410200, Hunan, China
  • 3.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.024
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Based on the analysis of patent application trend, major applicants and technological development in recycling of spent lithium iron phosphate batteries by leaching process, a list of key patents of mainstream technologies is presented. The results show that the number of patent applications for recycling of spent lithium iron phosphate batteries by leaching process has been steadily increasing since 2015, and oxidative acid leaching is the mainstream technology at present, with other technologies keeping in pace. However, some outdated technologies are being phased out.

spent battery recycling  /  spent lithium iron phosphate battery  /  leaching  /  patent analysis
Xiujiao HUANG, Qunying TAN, Qunxuan YAN, Biyun LUO, Hua SU, Yanhong YAN, Dan SUN. Patent Analysis for Recycling of Spent Lithium Iron Phosphate Batteries by Leaching Process[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 135 -140 . DOI: 10.3969/j.issn.0253-6099.2025.02.024
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.02.024
  • Receive Date：2024-12-05
  • Online Date：2026-03-19
  • Published：2025-04-01
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History
  • Received：2024-12-05
Funding
Affiliations
    1.Hunan Keyking Recycling Technology Co., Ltd., Hengyang 421800, Hunan, China
    2.Changsha Keyking Recycling Technology Co., Ltd., Changsha 410200, Hunan, China
    3.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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